Never blindly trust expert witnesses
Here's a very good, real life, example of why we should not blindly trust expert witnesses in DUI cases (or any criminal case for that matter).
A Forensics Charlatan Gets Caught in the Act: Video from a defense attorney's sting exposes Mississippi bite-mark "expert" Michael West. - Reason Magazine: "Plourd’s video sting ought to move public officials in Mississippi and Louisiana to thoroughly, if belatedly, investigate just how much damage this dentist has inflicted on the judicial systems of those states. There are still dozens of people in prison due in some part to 'expert' tetimony that has been shown to be anything but."
When a person's freedom and life is at stake, it is appropriate to question the methodology, motive and conclusions of any expert witness.
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